<template>
  <div class="wz-editor">
    <!-- 图片上传组件辅助-->
    <Upload ref="upload" class="avatar-uploader" action="https://upload.qiniup.com" :data="uploadData" :show-upload-list="false" :on-success="handleSuccess" :on-error="uploadError" :before-upload="handleBeforeUpload" style="display:none">
    </Upload>
    <quill-editor v-model="content" ref="myQuillEditor" :options="editorOption" @blur="onEditorBlur($event)" @focus="onEditorFocus($event)" @change="onEditorChange($event)">
    </quill-editor>
  </div>
</template>
<script>
import { getQiniuToken } from "@/api";
import { quillEditor } from "vue-quill-editor";
import "quill/dist/quill.core.css";
import "quill/dist/quill.snow.css";
import "quill/dist/quill.bubble.css";
// 工具栏配置
const toolbarOptions = [
  ["bold", "underline"], // 加粗 'italic',斜体 下划线 'strike'删除线
  // ['blockquote', 'code-block'], // 引用  代码块
  [{ header: 1 }, { header: 2 }], // 1、2 级标题
  [{ list: "ordered" }, { list: "bullet" }], // 有序、无序列表
  // [{ script: 'sub' }, { script: 'super' }], // 上标/下标
  [{ indent: "-1" }, { indent: "+1" }], // 缩进
  // [{'direction': 'rtl'}],                         // 文本方向
  // [{ size: ['small', false, 'large', 'huge'] }], // 字体大小
  // [{ header: [1, 2, 3, 4, 5, 6, false] }], // 标题
  [{ color: [] }, { background: [] }], // 字体颜色、字体背景颜色
  // [{ font: [] }], // 字体种类
  [{ align: [] }], // 对齐方式
  // ['clean'], // 清除文本格式
  ["image"] // 'link'链接、图片、video视频
];
export default {
  props: {
    /*编辑器的内容*/
    value: {
      type: String
    },
    /*图片大小*/
    maxSize: {
      type: Number,
      default: 4000 //kb
    }
  },

  components: {
    quillEditor
  },

  data() {
    return {
      content: this.value,
      quillUpdateImg: false, // 根据图片上传状态来确定是否显示loading动画，刚开始是false,不显示
      editorOption: {
        theme: "snow", // or 'bubble'
        placeholder: "您想说点什么？",
        modules: {
          toolbar: {
            container: toolbarOptions,
            handlers: {
              image: function(value) {
                if (value) {
                  // 触发input框选择图片文件
                  document.querySelector(".avatar-uploader input").click();
                } else {
                  this.quill.format("image", false);
                }
              }
            }
          }
        }
      },
      uploadData: {
        token: null,
        key: ""
      }
    };
  },

  methods: {
    onEditorBlur() {
      //失去焦点事件
    },
    onEditorFocus() {
      //获得焦点事件
    },
    onEditorChange() {
      //内容改变事件
      this.$emit("input", this.content);
    },

    // 文件上传前钩子-获取七牛云上传token
    handleBeforeUpload(file) {
      this.file = file;
      getQiniuToken({
        name: file.name,
        type: 1
      }).then(res => {
        this.uploadData = {
          token: res.data.token,
          key:
            "langya/" +
            file.type +
            "/" +
            Math.ceil(Math.random() * Math.pow(10, 15)) +
            "." +
            file.type.split("/")[1]
        };
        setTimeout(() => {
          this.$refs.upload.post(this.file);
        }, 200);
      });
      return false;
    },

    // 富文本图片上传前
    beforeUpload() {
      // 显示loading动画
      this.quillUpdateImg = true;
    },

    handleSuccess(res) {
      // res为图片服务器返回的数据
      // 获取富文本组件实例
      let quill = this.$refs.myQuillEditor.quill;
      // 获取光标所在位置
      let length = quill.getSelection().index;
      // 插入图片  res.url为服务器返回的图片地址
      quill.insertEmbed(length, "image", `https://res.squrab.com/${res.key}`);
      // 调整光标到最后
      quill.setSelection(length + 1);
      // loading动画消失
      this.quillUpdateImg = false;
    },
    // 富文本图片上传失败
    uploadError() {
      // loading动画消失
      this.quillUpdateImg = false;
      this.$message.error("图片插入失败");
    }
  }
};
</script>
<style lang="less">
.wz-editor {
  .quill-editor {
    line-height: normal !important;
    .ql-snow {
      .ql-formats {
        margin-right: 10px;
      }
      button {
        height: 22px;
        width: 25px;
      }
      .ql-editor {
        min-height: 250px;
      }
      .ql-picker {
        font-size: 12px;
      }
      .ql-picker.ql-size,
      .ql-picker.ql-header {
        width: 60px;
      }
      .ql-editor.ql-blank::before {
        font-style: normal;
        color: #ccc;
      }
      .ql-tooltip[data-mode="link"]::before {
        content: "请输入链接地址:";
      }
      .ql-tooltip.ql-editing a.ql-action::after {
        border-right: 0px;
        content: "保存";
        padding-right: 0px;
      }
      .ql-tooltip[data-mode="video"]::before {
        content: "请输入视频地址:";
      }
      .ql-picker.ql-size .ql-picker-label::before,
      .ql-picker.ql-size .ql-picker-item::before {
        content: "14px";
      }
      .ql-picker.ql-size .ql-picker-label[data-value="small"]::before,
      .ql-picker.ql-size .ql-picker-item[data-value="small"]::before {
        content: "10px";
      }
      .ql-picker.ql-size .ql-picker-label[data-value="large"]::before,
      .ql-picker.ql-size .ql-picker-item[data-value="large"]::before {
        content: "18px";
      }
      .ql-picker.ql-size .ql-picker-label[data-value="huge"]::before,
      .ql-picker.ql-size .ql-picker-item[data-value="huge"]::before {
        content: "32px";
      }
      .ql-picker.ql-header .ql-picker-label::before,
      .ql-picker.ql-header .ql-picker-item::before {
        content: "文本";
      }
      .ql-picker.ql-header .ql-picker-label[data-value="1"]::before,
      .ql-picker.ql-header .ql-picker-item[data-value="1"]::before {
        content: "标题1";
      }
      .ql-picker.ql-header .ql-picker-label[data-value="2"]::before,
      .ql-picker.ql-header .ql-picker-item[data-value="2"]::before {
        content: "标题2";
      }
      .ql-picker.ql-header .ql-picker-label[data-value="3"]::before,
      .ql-picker.ql-header .ql-picker-item[data-value="3"]::before {
        content: "标题3";
      }
      .ql-picker.ql-header .ql-picker-label[data-value="4"]::before,
      .ql-picker.ql-header .ql-picker-item[data-value="4"]::before {
        content: "标题4";
      }
      .ql-picker.ql-header .ql-picker-label[data-value="5"]::before,
      .ql-picker.ql-header .ql-picker-item[data-value="5"]::before {
        content: "标题5";
      }
      .ql-picker.ql-header .ql-picker-label[data-value="6"]::before,
      .ql-picker.ql-header .ql-picker-item[data-value="6"]::before {
        content: "标题6";
      }
      .ql-picker.ql-font .ql-picker-label::before,
      .ql-picker.ql-font .ql-picker-item::before {
        content: "标准字体";
      }
      .ql-picker.ql-font .ql-picker-label[data-value="serif"]::before,
      .ql-picker.ql-font .ql-picker-item[data-value="serif"]::before {
        content: "衬线字体";
      }
      .ql-picker.ql-font .ql-picker-label[data-value="monospace"]::before,
      .ql-picker.ql-font .ql-picker-item[data-value="monospace"]::before {
        content: "等宽字体";
      }
      .ql-editor {
        img {
          max-width: 80%;
        }
        p {
          &.ql-indent-1 {
            padding-left: 2em;
          }
        }
      }
    }
  }
}
</style>